摘要
以Mo元素对4J36的合金化制取具有低膨胀系数、高强度的膨胀合金,通过熔炼、锻打成型及热处理等制备工艺,在化学分析、金相和电镜扫描、晶粒度、显微硬度以及膨胀系数检测基础上,依据磁致伸缩理论和细晶强化理论分析提升机理。结果表明:Mo合金化提高了基体强度,并且使基体保持低的膨胀系数。
The expansion alloy made by Mo alloying of 4J36 has a low coefficient of thermal expansion （CTE） and high strength. The sample was prepared by melting, forging and heat treatment. The mechanism of performance improvement was analyzed according to the theory of magnetostrictive and fine grain strengthening on the basis of chemical analysis, metallographic, scanning electron microscopy, grain size, microhardness and CTE testing. The result shows that the strength of matrix is improved by Mo alloying and the CTE is lower than that of the expansion alloy manual requirement.
出处
《热加工工艺》
CSCD
北大核心
2012年第24期5-6,12,共3页
Hot Working Technology
基金
陕西省教育厅自然科学研究项目(12JK0802)
关键词
合金化
膨胀系数
磁致伸缩
细晶强化
alloying
expansion coefficient
magnetostrictive
fine grain strengthening
